FläktGroup ECONOVENT PURA Installation and Maintenance Manual

INSTALLATION AND MAINTENANCE INSTRUCTION

PURA

2

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

Content Page

Delivery Version PURA ......................................................................................................................................... 3

Handling, Loads on the Unit, Inspection Facilities .................................................................................... 4

Connection, Checks, Rotor Seals ..................................................................................................................... 5

Drive Unit, Speed Controller ................................................................................................................................ 6

To change the Rotor Bearings ........................................................................................................................... 7

Shaft Adjustment ..................................................................................................................................................... 8

To change the Drive Belt ...................................................................................................................................... 9

Maintenance .............................................................................................................................................................. 11

Service schedule ..................................................................................................................................................... 13

Dimensions and Weights .................................................................................................................................... 14

3

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

DELIVERY VERSION OF PURA

ROTOR DIAMETER 030 - 200 CM ROTOR DIAMETER 201 - 250 CM

Fig. 1:2

DELIVERY VERSION OF PURA

The cassette version of PURA units are supplied with a

cassette made of galvanized steel, stainless steel (304/316L)

or AluZink coated and with assembled rotor and drive unit.

The cassette can be supplied with (1 or 2) or without inspec-

tion cover for the drive system. The cassettes are designed

for installation inside a functional section of an Air handling

unit and must not be used as freestanding heat exchanger.

The cased version of PURA, position d=3 or 4 are cassettes

supplied with a casing made of galvanized steel, stainless

steel (304/316L) or AluZink coated and with assembled rotor

and drive unit. The cased version can be used as freestanding

heat exchanger of PURA.

IMPORTANT!

Protect the heat exchangers against contact

with water and moisture. Take every precaution

to prevent deformation of the rotor surfaces as

they are relatively sensitive to mechanical

damage.

NOTE!

The PURA is delivered as one piece cassette,

with rotor installed. For split unit please see

PURC, document 9335.

Fig. 1:1

Rotor Controller

Cable gland

Bristle

sealing

strip

Motor

Motor base plate

Drive belt

Purging sector

Centre beam

Casing

Rotor adjustment

bolts

Cable gland

Framework

Centre beam

Rotor

Casing

Purging sector Drive belt

Motor

Motor base plate

Bristle

sealing

strip

4

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

HANDLING – LOADS ON THE UNIT – INSPECTION FACILITIES

HANDLING

A forklift truck or a crane can be used for lifting and transporting

the heat exchangers. Leave the packaging on the unit so as to

protect the rotor surfaces until it is time to install the heat ex-

changer.

For sizes 030-200 use the plug holes on top of the cassette,

use appropiate lifting lugs (Fig 2:1).

For sizes 201-250, use the center beam, drill holes all way

through the center beam and use heavy duty lifting lugs.

Thighten the lifting lug with a nut underside the center beam.

Always make sure that the lifting lugs are strong enough and

that there isn’t any risk of the heat exchanger falling over.

LOADS PURA POSITION

The PURA rotor cassette is a heat exchanger in a cassette-type

casing designed for slide-in insertion into an Air Handling Unit.

The PURA rotor cassette must not be used as a supporting

component inside the Air Handling Unit itself.

The rotor cassette is, however, designed for supporting the load

of a partition between the supply air and the extract air extract

arrangements.

Keep in mind that the PURA rotor cassette is not designed for

horizontal installation! (Fig. 2:3)

INSPECTION FACILITIES

To allow for inspection and possible service work on the rotor,

either an inspection section or a duct with inspection panel

must be connected to the heat exchanger. If unit sections

with good access facilities are connected directly to the heat

exchanger, these sections may be used for inspection.

Fig. 2

Fig. 2:2

Fig. 2:3

Fig. 2:4

Size 030-201

Size 201-250

Fig. 2:1

Inspection cover

5

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

RUMSIDA

Till denna sida anslutes

– frånluft från lokalerna

– tilluft till lokalerna

ROOM SIDE

The following should be connected to this side:

– exhaust air duct from premises

– supply air duct to premises

RAUMSEITE

Angeschlossen auf dieser Seite werden:

– Abluftkanal vom Raum

– Frischluftkanal zum Raum

HUONEPUOLI

Tälle puolelle liitetään:

– Poistolma huonetiloista

– Tuloilma huonetiloihin

J4122668-0001

CONNECTION – CHECKS – ROTOR SEALS

CONNECTION TO THE AIR HANDLING UNIT

The PURA rotor cassette is designed for insertion into an appro-

priate Air Handling Unit casing (Fig.3:1) or the cassette can be

integrated into the Air Handling Unit already from the beginning.

Make sure that the supporting surface is level and that it can

support the weight of the heat exchanger. For particulars of how

to connect the supply air, extract air and the airflow directions:

See the label on the room side of the heat exchanger. (Fig. 3:2).

CHECKS BEFORE STARTING THE HEAT EXCHANGER

– The fans must not be run during the construction period if the

heat exchanger is not running.

– Also make sure that the appropriate filters have been fitted.

– The rotor is free to rotate

– The peripheral seal of the rotor is in contact with the partition,

and that the gap is the same (approx. 8 mm) all round.

– The centre seal is lightly in contact with the rotor all round.

– There is no significant damage to the rotor face.

– To prevent damage of the rotor surfaces, make sure that no

foreign objects have been left inside the connected supply

air and extract air ducts.

ROTOR SEALS

The PURA rotor cassette is fitted with sealing strips equipped

with synthetic bristles with intervening plastic foil.

The sealing strips are fitted along the rotor periphery and seal

there against the inside of the facing plate.

Fig. 3:2

Label indicating the connection side.

Fig. 3:1

Fig. 3:3

Fig. 3:4

6

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

DRIVE UNIT – SPEED CONTROLLER

DRIVE UNIT

The drive unit of the PURA rotor cassette consists of a motor

base plate, drive motor with belt pulley for round drive belt, motor

base plate, and the necessary cables and speed controller, if

fitted.

For all major service of the drive unit or rotor, it is advisable to

remove the entire motor base plate by backing off the retaining

screws, tilting the motor base plate as shown and unhooking it

up off the screws. (Fig. 4)

For the size 030-150 units, the motor is mounted on a bracket

with ”hooks” secured in recesses in the motor base plate.

The bracket is secured by M6 screws (Fig. 4:1).

For the size 151-250 units, the drive motor is secured by screws

directly to the motor base plate.

After having correctly refitted and secured the motor, fit the drive

belt around the belt pulley. The drive belt does not require re-

tensioning.

LOCATION OF THE SPEED CONTROLLER AND WIRING

For the size 110 and smaller rotors, the speed controller should

be located 10 mm below the top of the cassette.

For the larger rotors, the speed controller should be located

165 mm from the top of the cassette; however, depending on

the height of the casing, it should never be higher than 2230 mm

from the bottom of the cassette. (See the dimensions in Fig.4:2).

Run the motor or speed controller cables through any of the

prepunched holes in the front plates. The motor and control unit

of the variable-speed units are readywired with their cables

secured in holes in the centre spacer.

Fig. 4:1

Fig. 4:2

Fig. 4

Through holes for lifting and alternative cable lead-throughs.

Centre spacer

Max: 2230 mm10 or 165

Alternative cable lead-throughs

Location of speed

controller

7

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

TO CHANGE THE ROTOR BEARINGS – ROTOR SIZE 030 – 250

C. The worn bearings can now be tapped out of the rotor hub

(Fig 5:3).

D. Clean the bearing positions and the inside of the bearing

casing to remove old grease and fit new bearings. If you first

chill the bearings, this will make it easier to fit them.

Use an intermediate ring in front of the bearing to prevent bear-

ing damage. (Fig. 5:4)

E. Roll the rotor back to its position inside the cassette and refit

the other components in the reverse order.

Fig. 5:1

Fig. 5:2

Fig. 5:3

CAUTION!

Mark how the centre beam is mounted.

If it is not refitted correctly, the purging sector

will not purge the rotor passages!

A. See Fig. 5:1. Withdraw the cassette from the Air Handling

Unit casing just so far that the rotor shaft retaining screw is

accessible. Remove the drive belt from the motor pulley.

Then dismantle the motor base plate, centre spacer, rotation

monitor and the speed controller mounting bracket.

B. See Fig. 5:2 Block up the rotor and back off the shaft retaining

screws. Then dismantle one centre beam.

Withdraw the rotor shaft. The rotor can now be rolled out of

the cassette.

Center beam for sizes 201-250

Fig. 5:4 Intermediate ring

IMPORTANT!

After you have fitted new bearings, adjust

the rotor as described on page 8.

8

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

SHAFT ADJUSTMENT

The rotor position is factory-preset and normally does not need

any adjustment.

However, adjustment may be necessary in certain cases, for

example after fitting new bearings. The rotor position is simple

to adjust provided that the recommended inspection sections

have been arranged.

Otherwise, the cassette will have to be withdrawn out of the Air

Handling Unit.

Rotor size 030-109 cannot be adjusted. Rotor size 110-149

can be adjusted horizontally and rotor sizes 150-250 can be

adjusted both horizontally and vertically.

SHAFT ADJUSTMENT FOR ROTOR SIZE 110-149

Loosen the center bolt from both sides of the frame. Adjust the

rotor by moving the rotor to the left or to the right. The shaft can

be adjusted horizontally 2 mm on both directions and sides.

Tighten the locking bolt applying a torque of 50 Nm.

SHAFT ADJUSTMENT FOR ROTOR SIZE 150-250

Loosen the center bolt from both sides of the frame. The rotor

can be adjusted both horizontally and vertically by turning the

adjustment (excentric) nut. Adjust the position of the shaft by

turning the adjustment nut with a spanner.

The shaft can be adjusted horizontally 2 mm on both directions

and sides.

Tighten the locking bolt applying a torque of 50 Nm.

* Adj. horizontally

** Adj. horizontally/vertically

Fig. 6:1 Center bolt

Center bolt

Shaft

→

2 mm

→

2 mm

*

Fig. 6:1 Center bolt

Adjustment nut **

9

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

TO CHANGE THE DRIVE BELT

When the drive belt becomes worn, it must be replaced.

The drive belt can be replaced by a ready-welded spare belt.

The shaft will then have to be disengaged to allow the new belt

to be slipped over it. The procedure is the same as for changing

the bearings.

It is however simpler to replace the drive belt with a weldable

spare belt. If the new belt is to be up to standard, it is important

to weld the belt in a correct manner and using appropriate

equipment and material. The welding of belts should be carried

out using equipment developed especially for this purpose.

This equipment and belt can be ordered from FläktGroup.

(See spare part list).

1. If this belt welding equipment is used, the rotor need not be

withdrawn from the cassette. Cut off and remove the old

drive belt.

2. Carefully measure the exact length of belt according to the

length calculation method on the next page. Always cut off

the belt at a 90 ° angle!!

3. Tape one end of the belt to the periphery of the rotor and turn

the rotor through one revolution to enable the belt to be

welded in position. In most cases, the belt is shorter than the

circumference of the rotor and is then easier weld if it is first

prised off a bit between rotor sealing strip and the sheet

metal periphery plate. Do not stretch the belt during the weld-

ing sequence. Protect the belt ends to prevent them from

being fouled with grease and dirt.

4. It is important to work at correct temperature, about 270 °C

+- 10 °C. If the temperature becomes too high, for example if

the belt material is heated by exposure to hot sheet metal or

is blown with hot air, this will destroy the composition in the

polyurethane and the welding result will then be unsatis-

factory. This also generates harmful gases.

5. Make sure that the spring in the fixture is set to the correct

diameter.

Ø 2-6mm => A,

Ø 7-8mm => B,

Ø 10-15mm => C see Fig. 8

Secure the belt ends in the fixture in such a way that they can

come into contact with one another after they have been

heated.

6. Heat the ends against the welding iron (1) until a 1-2 mm

wide fused blub (2) forms. Then relax the application pres-

sure and heat with radiant heat only (3) for about 10 seconds.

The belt ends are now heated through without damaging the

polyurethane. See Fig. 9

7. Allow the spring of the fixture to press the ends against one

another. If the spring pressure is set too high, it will press out

the fused mass. If it is set too low, gas pockets will form.

Constant pressure is required for 1-2 minutes before the belt

can be freed from the fixture.

8. Use an appropriate pair of tongs, a knife,

file or abrasive disc to remove the collar (4)

formed by fused material. Let the joint

thoroughly cool down before refitting and thus loading the

belt (5-10 min).

Drive belts must not be replaced by belts of another type or

other make. They must not be joined together or intercon-

nected in any other way than that specified in this document,

without first consulting FläktGroup. Fig. 8

Fig. 9

IMPORTANT!

Do not keep the welding iron upside-down

while it is hot. Doing so will allow heat to rise

upward and damage the thermostat!

A

B

C

(4)

(1)

(2)

(3)

10

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

TO CHANGE THE DRIVE BELT

CALCULATING THE BELT LENGTH

The actual length of the drive belt prior to welding can be calcu-

lated as follows

Rotor diameter D is specified in cm on the product sign.

Dimensions y and d.

Calculate the exact belt length as follows:

Length L = 2 x C + 1,57 (D + d) + (D - d)2

4*C

Cut length = L x 0.95

Example:

Rotor D = 1000 mm

Drive pulley d = 70 mm

Distance from drive pulley to rotor Y = 113 mm

Distance between the centres C = 1000/2 + 113 = 613 mm

L = 2 x 613 + 1.57 (1000 + 70) + (1000 - 70)2

4 x 613

= 1226 + 1680 + 353 = 3259 mm

Cut length = 3259 x 0.95 = 3096 mm:

Y

D

C

d

D/2

D

D/2

C

d

11

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

MAINTENANCE

Service work on the heat exchanger concerns primarily the rotor,

seals and drive equipment.

The heat exchanger is accessible for service through inspection

doors covering the entire end surface. See to it that no items, that

otherwise would make maintenance impossible, permanently

block access to the service side of the heat exchanger.

DIRECTION OF ROTATION

The rotor shall rotate in a direction that enables a given point on

the rotor in the extract air to move toward the purging sector.

ROOM SIDE

The following should be connected to this side:

- Extract air duct from premises

- Supply air duct to premises

Fig. 1:2

Fig. 1:1

Rotor Controller

Cable gland

Bristle

sealing

strip

Motor

Motor base plate

Drive belt

Purging sector

Centre beam

Casing

Rotor adjustment

bolts

Cable gland

Framework

Centre beam

Rotor

Casing

Purging sector Drive belt

Motor

Motor base plate

Bristle

sealing

strip

ROTOR DIAMETER 030 - 200 CM ROTOR DIAMETER 201 - 250 CM

12

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

MAINTENANCE

SERVICE SCHEDULE

The specified intervals are applicable to an installation on day-

time operation. If the actual operating conditions differ widely

from the above, e.g. as regards dust, condensation and operat-

ing time, the intervals must be reduced.

Maintenance of the heat exchanger will be greatly facilitated

if the recommended supervisory and purging equipment is

installed.

ROTOR FACE SURFACES

Non-hygroscopic

Check that there is no dust deposit on the rotor faces.

If necessary, either vacuum-clean the rotor or use compressed

air aimed straight at the surface from a distance of at least 50

mm blowing from the clean towards the dust coated side.

If vacuum-cleaning or blowing with compressed air proves to

be inadequate (greasy dust), clean the non-hygroscopic rotor

surface as follows:

Spray a grease solvent by hand onto the dust-coated surface,

then blow clean with compressed air from the opposite side

aimed straight at the surface from a distance of at least 50 mm.

As an alternative, the rotor may be ﬂushed with low pressure

steam up to 50 kPa or water up to 50 bar from a distance of at

least 50 mm aiming straight at the surface, provided that the

condensate from the steam or the ﬂushing water can be satis-

factory collected.

BEARINGS

All sizes of the PUR (A,B,C,D) rotor cassette are equipped with

permanently lubricated bearings and require no lubrication.

Check the performance of the bearings every 12 months.

DRIVE BELT

Defective or worn drive belts shall be replaced. (see pages 11

and 12).

The drive belt for the PUR (A,B,C,D) rotor cassette has round

cross section and is made of polyurethane and does not need

to be tensioned.

CAUTION!

Protect the heat exchanger against contact

with water and moisture while it is in storage.

Take every precaution to prevent deforma-

tion of the rotor surfaces as they are relatively

sensitive to mechanical damage!

Item Interval Maintenance work

Face areas of the rotor 6 months Inspect and clean as necessary

Rotor bearings 12 months Check the performance

Seals 6 months (1 month1)) Check the position of the seal

Drive unit 6 months (1 and 3 months1)) Check the performance

Transmission 6 months Check the performance

Supervisory equipment 12 months Check the performance

CAUTION!

Do not use methyl ethyl ketone, acetone or

other aggressive solvents.

1) Applies during the initial period of operation

Hygroscopic/Sorption/Epoxy

Check that there is no dust deposit on the rotor faces.

If necessary, either vacuum-clean the rotor face or use com-

pressed air aimed straight at the surface from a distance of

at least 50 mm blowing from the clean side towards the dust

coated side.

Water or grease solvents may not be used for these types of

rotors

13

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

SERVICE SCHEDULE

Item

See

page Service work

6-monthly

service

12-monthly

service

Date Initials Date Initials

Face surface of the rotor 12 Inspect and clean if necessary

Rotor bearings 7 Check the performance

Seals by the rotor 5 Check the performance

Drive belt 9, 10 Check the performance

Transmission 6 Check the condition of the drive equipment

Supervisory and purging equipment 12 Check the performance.

Item

See

page Service work

6-monthly

service

12-monthly

service

Date Initials Date Initials

Face surface of the rotor 12 Inspect and clean if necessary

Rotor bearings 7 Check the performance

Seals by the rotor 5 Check the performance

Drive belt 9, 10 Check the performance

Transmission 6 Check the condition of the drive equipment

Supervisory and purging equipment 12 Check the performance.

Applies from ............................…………… to ............................……………….

14

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

DIMENSIONS AND WEIGHTS

General tolerance:

Generell tolerans /

ISO 2768-mK

C

B

A

100

99

9°

330

A

A (1 : 4)

Qty. Qty. Item no. Internal article no. Description

ModificationIssue Date Sign.

otherwise disclosed to any third party without our consent. Contraventions will be prosecuted.

This drawing and its contents is the property of the company and may not be copied or

Formular dwg.Formulärritn.

-

Jönköping

2013-03-08

21-

Fläkt Woods AB

Issue

PURA aaa=201-250;

Rotorkassett Rot. heat exch.

Smst

Ritning nr Drawing no

Assembly

J8008839

1:30

ApprCheck ScaleDate Drawn byDept.VariantVariant

G. GolubovicPUA

Version 6

aaa A B C

201-250 aaax10-20 bbb x 10 - 6 ccc x 10 - 6

A

C

B

100

9°

A

J4128551-2301, g=1

2034-2368, g=1

J4128551-2801, g=1

J4128551-2601, g=2

5

4

J6149078-0015

2

J4111516-1111 (17mm)

3

J4128551-2601, g=2

J4128551-2641, g=2

J4129551-2101

J6132020-0002, g=1

2034-3368, g=2

J4123686-2101, g=2

J4128551-2801, g=1

2063-1368, g=1

2028-2368, g=2

J8008647

A-A

330

GR

Qty. Qty. Item no. Internal article no. Description

ModificationIssue Date Sign.

otherwise disclosed to any third party without our consent. Contrav entions w ill be prosecuted.

This drawing and its contents is the property of the company and may not be copied or

Formular dwg.Formulärritn.

-

A3

Jönköping

2013-02-11

21-

Fläkt Woods AB

Issue

PURA-aaa-bbb-ccc aaa=110-200

Rotorkassett Rot. heat exch.

Smst

Ritning nr Drawing no

Assemb.

J8008681

1:20

ApprCheck ScaleDate Drawn byDept.VariantVariant

GGG. RajputUE

2013-01-11

Version 13

ccc-aaa>=30

Montering distans J8008647 om

/ Distance mounting if

Montering hölje se/Casing assem. see J8008755

Förklaring av kod se/Explanation of code see J8008659

aaa A B C

110 - 200 aaax10-20 bbb x 10 - 6 ccc x 10 - 6

BB F

C

D

C

D

E

TABLE 1: CASING DIMENSIONS, IN STEPS OF 1 CM

TABLE 2: CASING DIMENSIONS, IN STEPS OF 1 CM WHEN D=2 OR 4 (WITH INSPECTION COVER FOR DRIVESYSTEM)

SIZE 030 - 200 SIZE 201 - 250

Rotor size A B C D E F Weight (kg)*

ø 030...039 (cm) aaa +(10...50) +(25…80) 8 - 30

Example 030 40...80 55…110 8 - 30 25

ø 040...049 (cm) aaa +(10..50) +(20…80) 8 - 30

Example 040 50...90 60...120 8 - 30 31

ø 050...054 (cm) aaa +(10..50) +(15…80) 8 - 30

Example 050 60…100 65…130 8 - 30 37

ø 055...109 (cm) aaa +(10..50) +(10…80) 8/10 - 30

Example 060 70…110 70…140 8 - 30 43

070 80…120 80…150 10 - 30 51

080 90…130 90…160 10 - 30 61

090 100…140 100…170 10 - 30 71

100 110…150 110…180 10 - 30 82

ø 110...160 (cm) aaa +(10..50) +(10…110) 10 - 33

Example 110 120…160 120…220 10 - 33 110

120 130…170 130…230 10 - 33 122

130 140…180 140…240 10 - 33 136

140 150…190 150…250 10 - 33 151

150 160…200 160…260 10 - 33 166

160 170…210 170…270 10 - 33 182

ø 161...190 (cm) aaa +(10..110) +(15…110) 10 - 33

Example 170 180…280 185…280 10 - 33 202

180 190…290 195…290 10 - 33 220

190 200…300 205…300 10 - 33 239

ø 191...250 (cm) aaa +(10) ≤ 300 +(15) ≤ 300 10 - 33

Example 200 210…300 215…300 10 - 33 267

210 220…300 225…300 10 9,9 33 299

220 230…300 235…300 10 9,9 33 320

230 240…300 245…300 10 9,9 33 342

240 250…300 255…300 10 9,9 33 365

250 260…300 265…300 10 9,9 33 389

Rotor size A B C

ø 060…109 (cm) aaa +(15...50) +(30…80)

Example 030 45...80 60…110

ø 110…200 (cm) aaa +(15..50) +(15…110)

Example 150 165…200 165…260

ø 200…250 (cm) aaa +(10) ≤ 300 +(15) ≤ 300

Example 250 260…300 265…300

Note! aaa=code position aaa for PUR (A,B,C,D) and PURR. Rotor size 030-060 only available with d=1.

*) Example weight for min cassette dimensions, non hygro rotor and output variant 5 (1,7).

Table 1: when code position d=1 or 3. Table 2: when code position d=2 or 4.

15

Installation and maintenance

FläktGroup DC_9334GB 20220921_R2 Specifications are subject to change without further notice

NOTES

………………………………………………………………………………………………………………………………………………………………………………………………………………………………

Rotor size A B C D E F Weight (kg)*

ø 030...039 (cm) aaa +(10...50) +(25…80) 8 - 30

Example 030 40...80 55…110 8 - 30 25

ø 040...049 (cm) aaa +(10..50) +(20…80) 8 - 30

Example 040 50...90 60...120 8 - 30 31

ø 050...054 (cm) aaa +(10..50) +(15…80) 8 - 30

Example 050 60…100 65…130 8 - 30 37

ø 055...109 (cm) aaa +(10..50) +(10…80) 8/10 - 30

Example 060 70…110 70…140 8 - 30 43

070 80…120 80…150 10 - 30 51

080 90…130 90…160 10 - 30 61

090 100…140 100…170 10 - 30 71

100 110…150 110…180 10 - 30 82

ø 110...160 (cm) aaa +(10..50) +(10…110) 10 - 33

Example 110 120…160 120…220 10 - 33 110

120 130…170 130…230 10 - 33 122

130 140…180 140…240 10 - 33 136

140 150…190 150…250 10 - 33 151

150 160…200 160…260 10 - 33 166

160 170…210 170…270 10 - 33 182

ø 161...190 (cm) aaa +(10..110) +(15…110) 10 - 33

Example 170 180…280 185…280 10 - 33 202

180 190…290 195…290 10 - 33 220

190 200…300 205…300 10 - 33 239

ø 191...250 (cm) aaa +(10) ≤ 300 +(15) ≤ 300 10 - 33

Example 200 210…300 215…300 10 - 33 267

210 220…300 225…300 10 9,9 33 299

220 230…300 235…300 10 9,9 33 320

230 240…300 245…300 10 9,9 33 342

240 250…300 255…300 10 9,9 33 365

250 260…300 265…300 10 9,9 33 389

WWW.FLAKTGROUP.COM PURA 9334

» Learn more on www.ﬂaktgroup.com

or contact one of our ofﬁces

A HISTORY OF INNOVATION

AND RELIABILITY

With more than a century of accumulated industry experience, FläktGroup is

in a unique position to deliver energy efﬁcient components and solutions for

integrated performance, reliability and quality. With modern manufacturing

technologies, precise deliveries and technical support, FläktGroup is your

partner – fulﬁlling and surpassing industry standards and certiﬁcations.

FläktGroup ECONOVENT PURA Installation and Maintenance Manual

FläktGroup ECONOVENT PURA Installation and Maintenance Manual

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